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I NEED HELP IN MATH!! ~~*Heaven*~~

  Author:  55297  Category:(USM Events) Created:(12/3/2003 3:36:00 PM)
This post has been Viewed (984 times)

oki doki now... im in Algebra II and it blows. but i need help with a problem... here it is:

A 10meter by 20meter pool is surrounded by a deck of uniform (the same) width. The area of the deck is 216m SQUARED... how wide is the deck?

the answer is 3m but i dont know how to get there! :(

ok... this is how far i got:

10x20= 200m SQUARED is the area of the pool.

and i cant get any further... can anyone help me? :):):)

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Replies:      
Date: 12/3/2003 4:07:00 PM  From Authorid: 62344    do your own homework ha hahahah jk i hate math  
Date: 12/3/2003 4:08:00 PM  ( From Author ) From Authorid: 55297    lol, thanks for your comment! someone, please help me!!!!!!!!!!  
Date: 12/3/2003 4:16:00 PM  From Authorid: 60018    What are you trying to be solving for??  
Date: 12/3/2003 4:19:00 PM  ( From Author ) From Authorid: 55297    the area of the deck... the answer is 3m... its in the back of the book, but i dont know how to get it.  
Date: 12/3/2003 4:27:00 PM  From Authorid: 53284    Call the width of the deck X.
Then take the total area of the deck plus the pool. Subtract the area of the pool and you have an equation that you can solve for X

(10+X20+X) -( 10*20) = 216. The 216 was given.

  
Date: 12/3/2003 4:31:00 PM  From Authorid: 53008    oh cool im doing ther same thing!!! subtract the area of the larger by the smaller to get the difference are and solve for X  
Date: 12/3/2003 4:33:00 PM  From Authorid: 33573    Hmmm I am in Advanced Algebra but we aren't in that right now. I am having a hard enough time with the stuff we are doing!  
Date: 12/3/2003 4:34:00 PM  From Authorid: 53008    hold on i really wanna solve this lemme get some paper...  
Date: 12/3/2003 4:37:00 PM  From Authorid: 53284    Actually, my answer turns out to be six. But, the width of the deck is X/2 because it is on both sides of the pool. Draw a picture, it helps.  
Date: 12/3/2003 4:48:00 PM  From Authorid: 53008    argh im stumped on this one, but we're doing the exact same thing in my algebra class and my teacher always says to make a picture. and AL - AS = DA  

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